qt - Accessing the value in Qmap with the help of its key -

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i have qmap , have defined qmap<qstring,modelvariables>modelmap modelvariables structure parameters valueref,value , id. want access parameter value defined in structure. wrote following code shows error.

float hxt_val_ft04 = modelmap.value("hxt_v_ft04");

error: expected primary expression before '.' token.

mvariables["hxt_v_ft04"] return modelvariables object if there key matching "hxt_v_ft04". otherwise default construct object , return it. can use

mvariables["hxt_v_ft04"].value

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